Polariscope tube



y- 1933- c. H. NINEGAR 1,907,363

POLARISGOPE TUBE Filed May 27, 1931 mar 14 W 6227/6617 Mk6 a5:

5 m NTOR BY 9 I y 1 50, ATTORNEY Patented May 2, 1933 UNITED STATES CHARLES H. NINEGAR, or YIBAYARD, NEBRASKA roLAnIscorn TUBE Application filed May 27,

This invention relates to a polariscope tube and it consists in the novel features hereinafter described and claimed.

An object of the invention is to provide a tube of the character stated which is of simple and durable structure and adapted to retain a sample of syrup or solution for the purpose of accurately determining the pptical activity in the said sample or solution.

The tube holds the solution and when filled with the solution the percentage of sugar may be determined by measurement in the polariscope in a usual manner.

In the accompanying drawing Figure 1 is a side elevational view of the polariscope tube with parts shown in sections.

Figure 2 is a tranverse sectional view of the same cut on the line 22 of Figure 1.

The polariscope tube structure includes a cylindrical jacket 1 of metal which is exteriorly threaded at its ends as at 2. Glands 3 are adapted to be screwed upon the threads 2 and the glands 3 are provided at their inner ends with supporting ring portions 41 adapted to hold the tube when it is applied to the body of the polariscope. The glands 3 are provided at their outer ends with inturned flanges 5 and rubber packing rings 6 are interposed between the flanges 5 and the ends of the jacket 1. A glass tube 7 is centrally disposed within the jacket 1 and the edges of the flanges 5 hold the tube 7 in concentric relation with the jacket and with the exterior surface of the tube slightly spaced from the interior surface of the jacket. The ends of the tube 7 are ground off squarely across the tube so that the end edges 8 at the opposite end of the tube are parallel with each other and disposed at a right angle to the axis of the tube. Each gland 3 is provided with one or more outstanding studs 9.. The purpose of which will be hereinafter explained. Disks 10 of transparent glass bear against the end edges 8 of the tube 7. Cylindrical cap members 11 are adapted to slide upon the glands 3 and the said cap members are provided with angle slots 12 adapted to receive the studs 9 upon the glands and whereby the cap members may be attached to the gland and by turning the cap members upon the gland 'may be readily separated therefrom The capmembers'll are of greater diameter at one end than the other and the smaller ends ofth'e cap members 'snugly'receive the glands 3. j Each cap member is provided in its larger end with a transversely disposed partition :111 13 which bearsag'ainst the edge of one of the disks 10." Thus the disks" are firmly held against the squared edges 8 of the tube 7. The partition walls 13 may slide within' the larger ends of the cap members and light springs of" conical formation 14 are interposed between closures 15 screwed into the larger ends of the cap members and the smaller ends of the spring bear against the partitions 13 and hold the partitions against the disks 10 and the disks against the end edges of the tube 7. The partitions 13 are provided with openings 16 which register longitudinally the closures 15.

In use the tube 7 is filled with the solution and the percentage of sugar is determined by measurement in the polariscope in a usual manner by looking through the openings 17 and 16 and through the samples of syrup contained within the tube.

The structure is such that the cap members are positively locked uponthe glands and the springs carried by the sleeves which are attached to the glands exert uniform pressure upon the disks which are at the ends of the tubes 7 and consequently the said disks are not subjected to unusual or undue strain or distortion. The disks may be loaded with the syrup solution by removing one of the cap members and one of the disks and filling the tube 7 while it is in the jacket lwith the syrup solution. The disk 10 which has been previously removed is replaced in position at the end of the tube and a cap member is applied to the glands whereby the disk is secured in position at the end of the tube and the solution is confined within the tube between the disks 7 at the ends thereof.

Having described the invention what is claimed is i 1. A polariscope tube comprising a cylindri-cal gland, a tube concentrically supported within the gland, said tube having a squared with openings 17 provided in 70 end edge, a transparent disk bearing against the end of the tube, a sleeve engaging the gland, a partition wall slidable within the sleeve, a closure for the sleeve, a spring interposed between the. closure and the partition wall and holding the partition wall against the transparent disk, said partition Wall and closure having aligned openings.-

2. A polariscope tube comprising a cylindrical jacket, a tube concentrically mounted therein, a gland engaging the jacket andhaving an lnturned flange bearing againstthe tube and adapted to hold the tube concentrically with relation to the jacket, packing members interposed between theflange and the end of the jacket and surrounding. the tube, said tube having a squared end, a transparent disk bearing against said end, a partition member bearing against the disk, a sleeve slidablv engaging the gland and receiving the partition member, a closure for the sleeve, a spring interposed between the closure and the partition member, said partition member and closure having sight openings. r

In testimony whereof I aflix my si nature.

-- CHARLES H. NINEEAR. 

